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Finding the Fourth Proportional to 51,284.25, 70,772.36 and 28,928.25

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Solution

The fourth proportional to 51,284.25, 70,772.36 and 28,928.25 is: 39,921.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,284.25 : 70,772.36 = 28,928.25 : x
  2. Step 2: Convert to fraction form
    51,284.25/70,772.36 = 28,928.25/x
  3. Step 3: Cross multiply
    51,284.25x = 70,772.36 × 28,928.25
  4. Step 4: Simplify right side
    51,284.25x = 2,047,320,378.53
  5. Step 5: Solve for x
    x = 2,047,320,378.53/51,284.25
  6. Step 6: Final answer
    x = 39,921.04

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.